<template>
  <div id="popover">
    <el-popover placement="top-start" title="标题" width="200" trigger="hover" content="sflsdjflsdjflsdjflsdjlfsdjlfjsdlfjsdlfjdsljflsd">
      <el-button slot="reference">hover 激活</el-button>
    </el-popover>
  </div>
</template>
